Railroad-crossing



(-No Model.) v 2 Sheets-Sheet 1 G. R. CAMPBELL. RAILROAD CROSSING.

No. 437,976. Patented 0011.7, 1890.

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(No Model.)

' I 2 Sheets-Sheet 2. G. BMOAMPBELL. RAILROAD CROSSING. No. 437,976.

Patented Oct. 7, 1890.

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WIZJVESSE'S summon UNITED STATES PATENT OFFICE.

GEORGE R. CAMPBELL, OF BUOYRU'S, OHIO.

RAILROAD-CROSSING.

SPECIFICATION forming part of Letters Patent No. 437,976, dated October 7, 1890. Application filed February 27, 1890. Serial No. 842,007- (No model.)

To all whom it may concern.-

Be it known that I, GEORGE R. CAMPBELL, a citizen of the United States, residing at Buoyrus, in the county of Crawford and State of Ohio, have invented certain new and useful Improvements in RailroadOrossings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which 10 it appertains to make and use the same.

My invention relates to improvements in railroad= crossings; and it consists in a certain novel arrangement and construction of parts whereby the crossing is automatically operated so as to open the crossing to an approaching train and close it to the intersecting track.

In the accompanying drawings, Figure 1 is a plan view of my improved crossing, and

Figs. 2 and 3 are vertical sections taken at right angles to each other.

The tracks A A are of the usual construction, and at the corners or angles of the intersecting rails I secure the stationary rail- 2 5 sections B, as shown, and between the said stationary rail-sections I arrange the sliding rail-sections 0, all of which is fully shown and described in a pending application filed by me, and which forms no part of the par- 0 ticular improvements forming the subjectmatter of my present application.

In the webs of the rails forming the tracks or in suitable bearing-boxes secured on the ties and at a proper distance from the cross- 5 ing I journal the rock-shafts D, which are which is connected with the sliding rail-sections in the manner shown in my aforesaid pending application. The rock -shafts are further provided at their ends and adjacent to the track-rails with the lever-arms H, which 5 project upward toward the top of the rails and inward toward the crossing.

The construction and arrangement of the several parts of the lever being thus made known, the operation of the same will be readily understood. A train approaching the crossing will ride against and over the levering rail-sections of the intersecting track to move away from the stationary rail-sections, as will be readily understood. The crossing will thus be automatically adjusted to permit the train to pass, and will remain in this position until a train approaches on the intersecting track, when by a similar operation the position of the parts will be reversed, so

that the track formerly opened will be closed and the one formerly closed will be opened.

It will be observed that my improved device is extremely simple in its construction, and that it is efficient in its operation. It is operated entirely by the wheels of the passing train, and consequently the danger of accidents arising through the negligence of attendants is obviated. By having the leverarms on the rock-shaft inclined inward toward the crossing the wheels of the train will be caused to vibrate the said lever-arms positively in the proper direction and the correct operation of the crossing insured.

Having thus described my invention, what I claim, and desire to secure by Letters Pat ent, is

As an improvement in railroad-crossings, the combination of the sliding rail-sections forming parts of the intersecting tracks, the central turn-table, connections between the turn-table and the sliding rail-sections, the rock-shafts journaled in the track-rails and extending transversely between the same, connections between said rock-shafts and the turn-table, and the levers at the ends of the rock-shafts, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE R. CAMPBELL. Witnessses:

ISAAC CAHILL, G. A. MoNUrr. 

